What powers astro.cz?
Last seen Jun 2026 · 44 technologies across 22 categories
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Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| international dark sky association | #85 | 85 |
| msc | #10 | 21 |
| bortle map | #86 | 9 |
| solarham | #50 | 8 |
| msc | #28 | 4 |
| al sobotka | #78 | 2 |
| dr leonid pavel | #51 | 2 |
| catalina lemmon | #65 | 1 |
| clanky | #85 | 1 |
| comet ikeya seki | #65 | 1 |
| treku | #88 | 1 |
| tyden park | #79 | 1 |
| astro pixel processor | #75 | 1 |
| astro pixel processor | #69 | 1 |
| astro pixel processor | #61 | 1 |
| asi3 | #67 | 1 |
| s doradus | #88 | 1 |
| starship ift 8 | #80 | 1 |
| ogle-2016-blg-1928 | #49 | 1 |
| pavel hlava 9/11 | #97 | 1 |
| pons fabricius | #98 | 1 |
| john tomase | #80 | 1 |
| karlovo nmst | #78 | 1 |
| knize ten | #89 | 1 |
| gemini agena | #86 | 1 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
Audience
- 68% phone
- 27% desktop
- 5% tablet
Czechia
Slovakia
Poland
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
6.84 / 10 · ranked #54,449 of all domains
480 referring domains · OpenPageRank
Search traffic
150 est. monthly organic visits (US)
146 keywords in Google's top 30
Core Web Vitals
| LCP | 1.6 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 600 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Weight: 1.2 MB · 55 requests
- Structured data: JSON-LD
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| mladez.astro.cz | 14 |
| turnov.astro.cz | 13 |
| olympiada.astro.cz | 12 |
| udalosti.astro.cz | 11 |
| hvezdy.astro.cz | 10 |
| objekty.astro.cz | 10 |
| planety.astro.cz | 10 |
| www.astro.cz | 10 |
| posec.astro.cz | 9 |
| var.astro.cz | 9 |
| akce.astro.cz | 7 |
| www-old.astro.cz | 7 |
| brno.astro.cz | 6 |
| ukazy.astro.cz | 4 |
| var2.astro.cz | 4 |
Full technology history →
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Recent changes
- dropped YouTube May 2026
- detected Twitter Emoji (Twemoji) Mar 2026
- detected YouTube Jan 2026